Electrostatic discharge protection device and method of fabricating the same

A method of fabricating an electrostatic discharge protection device, comprising:

• forming a gate structure on the substrate, wherein the gate structure comprises a body part and a plurality of extension parts, an extending direction of the body part is different from an extension direction of the plurality of extension parts, and the body part is connected to the plurality of extension parts;
• forming a plurality of first doped regions in the substrate between the plurality of extension parts;
• forming a plurality of second doped regions in the substrate at two outer sides of the plurality of extension parts,
• wherein the plurality of first doped regions and the plurality of second doped regions have different conductivity types;
• forming a plurality of third doped regions in the substrate at a first side of the body part of the gate structure and between the extension parts of the gate structure;
• forming a plurality of fourth doped regions in the substrate at a second side of the body part of the gate structure;
• and
• forming a plurality of fifth doped regions in the substrate at the first side of the body part of the gate structure and outside of the extension parts of the gate structure,
• wherein the third doped regions and the first doped regions have the same conductivity type, and the fifth doped regions, the fourth doped regions and the second doped regions have the same conductivity type.